def _get_metadata_value(self, obj, key): if key not in obj['metadata']: if isinstance(obj, volume.Volume): raise exception.VolumeMetadataNotFound(volume_id=obj['id'], metadata_key=key) elif isinstance(obj, snapshot.Snapshot): raise exception.SnapshotMetadataNotFound(snapshot_id=obj['id'], metadata_key=key) else: raise exception.MetadataAbsent() return obj['metadata'][key]
def _from_db_object(cls, context, backup, db_backup, expected_attrs=None): if expected_attrs is None: expected_attrs = [] for name, field in backup.fields.items(): if name in cls.OPTIONAL_FIELDS: continue value = db_backup.get(name) if isinstance(field, fields.IntegerField): value = value if value is not None else 0 backup[name] = value if 'metadata' in expected_attrs: metadata = db_backup.get('backup_metadata') if metadata is None: raise exception.MetadataAbsent() backup.metadata = {item['key']: item['value'] for item in metadata} backup._context = context backup.obj_reset_changes() return backup
def _from_db_object(cls, context, snapshot, db_snapshot, expected_attrs=None): if expected_attrs is None: expected_attrs = [] for name, field in snapshot.fields.items(): if name in cls.OPTIONAL_FIELDS: continue value = db_snapshot.get(name) if isinstance(field, fields.IntegerField): value = value if value is not None else 0 setattr(snapshot, name, value) if 'volume' in expected_attrs: volume = objects.Volume(context) volume._from_db_object(context, volume, db_snapshot['volume']) snapshot.volume = volume if snapshot.cgsnapshot_id and 'cgsnapshot' in expected_attrs: cgsnapshot = objects.CGSnapshot(context) cgsnapshot._from_db_object(context, cgsnapshot, db_snapshot['cgsnapshot']) snapshot.cgsnapshot = cgsnapshot if snapshot.group_snapshot_id and 'group_snapshot' in expected_attrs: group_snapshot = objects.GroupSnapshot(context) group_snapshot._from_db_object(context, group_snapshot, db_snapshot['group_snapshot']) snapshot.group_snapshot = group_snapshot if 'metadata' in expected_attrs: metadata = db_snapshot.get('snapshot_metadata') if metadata is None: raise exception.MetadataAbsent() snapshot.metadata = { item['key']: item['value'] for item in metadata } snapshot._context = context snapshot.obj_reset_changes() return snapshot